Method of ventilating sewers and drains



I (No Model.)

. r T. S. VERY.

Method of Ventilating Sewers and Drains.

` Patented May 31, 1881;

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` UNITED STATEs PATENT OFFICE.

THEQDOBE S. VERY, OF BOSTON, MASSAGHUSETTS.

'METHOD OF VENTILATING SEWERS'AND DRAINS.

SPECIFICATION forming part of Letters Patent No. 242,169, dated May 31, 1881.

Application filed May 4, 1880. (No model.)

To all whom it may concer:

Be it known that I, THEODORE S. VERY, ot' Boston, in the County of Suffolk and State of Massachusetts, have in vented certain Improvements in Methods of Ventilating Sewers and Drain-s, of which the following is a specification.

This inventiou relates to methodsof ventilation for preventin g the introduction of sewergas into buildings. It is fully set forth in the accompanying drawings, forming part of this specification, in which Figure lis a plan view of a portion of the basenent of a building, showing the drains constructed in the manner embodying my invention. Fig. 2 is avertical longitudinal section on line x w, Fig. l.

In these figures the same letters refer 'to the same parts.

It is well known that the passage of sewergas from thestreet drains back through the house-drains, from Whence it escapes through the water-closets and other plumbing works intothe house, forms a prolific source of disease. The traps at present used to prevent the introduction of this gas frequently prove inadequate for the purpose, and to secure a perfect barrier to its entrance requires careful workmanship and aresort to costly xpedients in carrying out the plumbin g arrangements of the building.

My invention is designed to provide a simple and thoroughly efficient means of preventing the backward current of this gas from the street to the house, and at the same time se cure a powerful outward draft from the house To this end I make use of the device which I will now proceed to describe and claim.

In the drawings, M represents the street main orsewer, with which the house-drains are connected 'by the trunk drain H. This trunk drain reeeives the upright soil-pipe S, extending from the waterclosets and other plumbingworks in the upper part of the house, and the branch drain G from worksin a ditt'ercnt part of the building.

B represents a blowing apparatus, of the Sturtevant or any approved pattern, connected by the pipe P with the trunk drain H. The pipe P enters the trunk drain at an acute angle at some point between the last branch connection with said trunk drain and its outlet into the street-main. V

The blowing apparatus B is operated by any suitable motor in the usual manner, and is adapted, when in operation, to force a strong current of air through the pipe P, and outwardly through the trunk drain H into the sewer M. By this arrangement it is obvious that a strong outward current is maintained in the trunk drain H, and all reverse or back- Ward action of sewengas from the main to the house is efi'ectually prevented. The outward current ot' air also serves to free the branch pipes O S from foul air.

I do not limit myself to any particular form of blowing apparatus, as .the prnciple of my invention can be carried out by forcing a jet of steam into the drains, or by any approved means of' creating a strong outward draft therein.

It is obvious that myinvention is applicable to any sort of building, and that any number of branch drains may enter the tru-uk drain without interrering with its operation, it only .being necessary to connect the blower with the trunk drain at some point outside the last brancl connection.

My inven'tion may also be applied, on a larger scale, for ventilating the street-sewers, the blowing apparatus in such a case being placed in iinnediate connection therewith. When used for ven tilating the drains of abuilding only, the blower may be placed in either story, as may be most convenient, and the air or stean transmitted from it to the drain by hose or any other approved conductor.

Having thus described my invention, what I claim is 1. The improvement in the art of ventilating sewers herein described,which consists in forcin g a current of air outward from a building into the main and branch drains connected with such building, whereby the flow of sewergas into the building is prevented, substantially as specified.

2. The combination of blowing or air-forcin g apparatus with the drains of a building, substantially in the manner and for the purpose set forth.

In testimonywhereof I have signed my name to this specification, in the presence of two subscribing witnesses, this 29th day of April, A'. D. 1880.

THEODORE S. VERY.

Witncsses:

0. F. BROWN, J. W. SKINNER.

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